Multiple piece turbine engine airfoil with a structural spar

Patent · Tue Oct 11 00:00:00 EDT 2011

OSTI ID:1029264

Vance, Steven J ^[1]

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1. Orlando, FL

A multiple piece turbine airfoil having an outer shell with an airfoil tip that is attached to a root with an internal structural spar is disclosed. The root may be formed from first and second sections that include an internal cavity configured to receive and secure the one or more components forming the generally elongated airfoil. The internal structural spar may be attached to an airfoil tip and place the generally elongated airfoil in compression. The configuration enables each component to be formed from different materials to reduce the cost of the materials and to optimize the choice of material for each component.

• Research Organization: National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States); Siemens Energy, Inc. (Orlando, FL)
• Sponsoring Organization: USDOE
• DOE Contract Number: FC26-05NT42646
• Assignee: Siemens Energy, Inc. (Orlando, FL)
• Patent Number(s): 8,033,790
• Application Number: 12/239,016
• OSTI ID: 1029264
• Country of Publication: United States
• Language: English

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